Man I Love all your videos you are the man ! I am old now but because of you I am going to try and find an old dirt bike and try and find my youth again, Thank you Dale.
im 80 and always looking for a old derelict small bike that needs love. have just 2 left that i finished about a year ago. love the hunt on ebay for parts and getting manuals etc, great therapy. trick now a days is getting the price down low as people think the old bikes are worth a lot.
Awesome vid. I fixed my kids kx85 swingarm using machining an insert and milling the bad one out. The tigging the insert in. You have inspired me to make vids on this.
Right on man, sounds like you have caught the bug. Jump on in the water is fine. You will do great on RU-vid with your fabrication and machining talent, all you need is your phone camera and some editing software and your off and running.
Thanks Dale for the sequel on the Yamaha 90 twin. Nice insights on the gearbox, clutch and magneto assembly. I think the next video would be the icing on the cake... Piston and cylinder assembly. Looking forward to it. 👍
Great video on repairing the clutch basket and the installation. Good catch on the clutch plate orientation. Even the parts book can occasionally be wrong. Looking forward to the boring of the cylinders.
Very much enjoyed reassembly of this cool little twin. Very surprised to see such an error in the service manual on clutch discs, but you found it! Excellent insights on the gears and magneto. Look forward to hearing it run!
Thanks Jim, it has been fun and there is a long way to go. Yes, there are a lot of problems with some of the early manuals. You have to be careful with spec's especially.
Exciting conclusion to the bottom end reassembly. You've got a nice methodical approach, talking through each step to be sure nothing is left out. I always like to mention that my first bike was a '71 HS1 and it had a B suffix to designate the second year of that model. Thanks for the informative and well produced video Dale.
Thanks Doug, I have not ridden a HS1 but have ridden the YL1 twin jet 100, this HS1 should be faster with the carb slides replaced and since it's a 5 speed instead of a 4.
Thanks Murray, yeah that was the way to get the 90 to run as fast or faster than the 100, because it's got a 5-speed transmission also. The twin jet 100's were fast though.
These videos are of much help to me Dale, even when I have a different engine. I thought about setting the shift pawl thing as mine doesn't shift very well, I also thought I got a bad copy of the shifter shaft as I've put a new one in. More thinking watching this made me realize that I made a mistake in making a gasket that goes between the two engine halves of the engine as it was part of the kit I bought. I now realized that there's no gasket to go there but sealant ! Oh well, I guess it needs to come apart again ! 😅 Regards, Ard BTW, what is a good place to get parts from for these older models ?
Woops! we all make mistakes Ard. Just learn from them and move on. Parts? I get a lot from the OEM manufactures, still a lot of parts available. Used parts from Ebay or the local salvage yard.
Good video, thanks. My YL1 (UK) 50 yrs ago I recall had an innovative gear change pattern; if you stopped at traffic lights in top gear you could press the lever again into neutral(!), BUT if riding along you forgot it was in top another 'upwards' change would give you neutral - ah ha- missed a gear?, so try again and into 1st!!!!!!! 💩🩲. By the by, if you want a smaller cylinder bike Moto Guzzi marketed a 50cc aircooled twin in '69/'70, but I never saw one in the flesh.
Thank you, oh yes, the shift pattern on those older bikes can cause a lot of problems for those of us that are now used to the newer pattern, since about 1969 I think. I have to concentrate on shifting while riding the older ones. I have heard there were many smaller twins back in the day. But like you, I have never seen one in the wild. In some magazines I have seen some strange but fast bikes.
I find it amazing that they made a 90cc twin back then. Too bad they don't make them today. And they even put helical primary drive gears in it, unlike some newer bikes made today.
